Table 3: Work productivity according to WPAI-AR.

Percentiles   n mean DS 25 median 75 Missed work hours due to RA 90 6.3 12.6 0 0 8 Missed work hours due to other reasons 90 5.2 13.8 0 0 6 Actually worked hours 90 34 20 18 32 48 Work affected by RA (0 a 10) 90 3.8 2.6 2 3.5 6 DLA impairment due to RA (0 a 10) 90 4.2 2.7 2 4 7.00 Percentage of absenteeism 90 14 24 0 0 20 Percentage of presenteeism 90 38.4 26 20 35 60 Percentage of overall productivity loss 90 45 30 20 45 70 Percentage of DLA compromise 90 42 27 20 40 70

WPAI: Work Productivity and Activity Impairment Questionnaire. DLA: Daily life activities.